cmd/compile: internal compiler error: Expand calls interface data problem #49378
Description
$ gotip version
go version devel go1.18-6fefb7f9f3 Fri Nov 5 07:00:05 2021 +0000 windows/amd64
package p
func f(i int) {
var s1 struct {
s struct{ s struct{ i int } }
}
var s2, s3 struct {
a struct{ i int }
b int
}
func() {
i = 1 + 2*i + s3.a.i + func() int {
s2.a, s2.b = s3.a, s3.b
return 0
}() + func(*int) int {
return s1.s.s.i
}(new(int))
}()
}
$ gotip tool compile crash.go
crash.go:18:2: internal compiler error: 'f.func1': Expand calls interface data problem, func f.func1, v=v39 = StructSelect <int> [0] v13, w=v13 = StructSelect <int> [0] v9
goroutine 1 [running]:
runtime/debug.Stack()
D:/users/XXX/alberto/other/gotip/src/runtime/debug/stack.go:24 +0x65
cmd/compile/internal/base.FatalfAt({0x1145140?, 0x0?}, {0xc0000be7c0, 0x3f}, {0xc000059300, 0x4, 0x4})
D:/users/XXX/alberto/other/gotip/src/cmd/compile/internal/base/print.go:227 +0x1ca
cmd/compile/internal/base.Fatalf(...)
D:/users/XXX/alberto/other/gotip/src/cmd/compile/internal/base/print.go:196
cmd/compile/internal/ssagen.(*ssafn).Fatalf(0x8?, {0x171f0598?, 0x208?}, {0x11ee34e, 0x39}, {0xc0003c23f0, 0x3, 0x0?})
D:/users/XXX/alberto/other/gotip/src/cmd/compile/internal/ssagen/ssa.go:7650 +0x17d
cmd/compile/internal/ssa.(*Func).Fatalf(0xc0003de380, {0x11ee34e, 0x39}, {0xc0003c23f0, 0x3, 0x3})
D:/users/XX/alberto/other/gotip/src/cmd/compile/internal/ssa/func.go:773 +0x279
cmd/compile/internal/ssa.expandCalls(0xc0003de380)
D:/users/XXX/alberto/other/gotip/src/cmd/compile/internal/ssa/expand_calls.go:1472 +0xbff
cmd/compile/internal/ssa.Compile(0xc0003de380)
Compiles fine on go1.17.2.
Similar: #49249.